package com.heima.wemedia.service.impl;

import com.alibaba.fastjson.JSONArray;
import com.baomidou.mybatisplus.core.toolkit.StringUtils;
import com.heima.apis.article.IArticleClient;
import com.heima.file.service.FileStorageService;
import com.heima.model.article.dto.ArticleDto;
import com.heima.model.common.dtos.ResponseResult;
import com.heima.model.wemedia.pojos.WmChannel;
import com.heima.model.wemedia.pojos.WmNews;
import com.heima.model.wemedia.pojos.WmUser;
import com.heima.wemedia.mapper.WmChannelMapper;
import com.heima.wemedia.mapper.WmNewsMapper;
import com.heima.wemedia.mapper.WmUserMapper;
import com.heima.wemedia.service.WmNewsAutoScanService;
import lombok.extern.slf4j.Slf4j;
import org.apache.kafka.common.protocol.types.Field;
import org.checkerframework.checker.units.qual.A;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.scheduling.annotation.Async;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.ByteArrayInputStream;
import java.util.*;
import java.util.stream.Collectors;

@Service
@Slf4j
@Transactional
public class WmNewsAutoScanServiceImpl implements WmNewsAutoScanService {


    @Autowired
    private WmNewsMapper wmNewsMapper;

    /**
     * 自媒体文章审核
     *
     * @param id 自媒体id
     */
    @Override
    @Async  //标明当前方法是一个异步方法
    public void autoScanWmNews(Integer id) {
        try {
            Thread.sleep(1000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        //1.查询自媒体文章
        WmNews wmNews = wmNewsMapper.selectById(id);
        if (wmNews == null){
            throw new RuntimeException("WmNewsAutoScanServiceImpl-文章不存在");
        }
        if(wmNews.getStatus().equals(WmNews.Status.SUBMIT.getCode())){
            //从内容中提取纯文本内容和图片
            Map<String,Object> textAndImages = handleTextAndImages(wmNews);

            //2.审核文本内容  阿里云接口
            boolean isTextScan = handleTextScan((String)textAndImages.get("content"),wmNews);
            if (!isTextScan) return;

            //3.审核图片  阿里云接口
            boolean isImageScan =  handleImageScan((List<String>) textAndImages.get("images"),wmNews);
            if(!isImageScan)return;

            //4.审核成功，保存app端的相关的文章数据
            ResponseResult responseResult = saveAppArticle(wmNews);
            if(!responseResult.getCode().equals(200)){
                throw new RuntimeException("WmNewsAutoScanServiceImpl-文章审核，保存app端相关文章数据失败");
            }
            //回填article_id
            wmNews.setArticleId((Long) responseResult.getData());
            UpdateWmNews(wmNews,(short) 9,"审核成功");
        }

    }


    @Autowired
    private IArticleClient articleClient;

    @Autowired
    private WmChannelMapper wmChannelMapper;

    @Autowired
    private WmUserMapper wmUserMapper;


    /**
     * 保存app端相关的文章数据
     * @param wmNews
     */
    private ResponseResult saveAppArticle(WmNews wmNews) {
        ArticleDto dto = new ArticleDto();
        //属性的拷贝
        BeanUtils.copyProperties(wmNews,dto);
        //文章的布局
        dto.setLayout(wmNews.getType());
        //频道
        WmChannel wmChannel = wmChannelMapper.selectById(wmNews.getChannelId());
        if(wmChannel != null){
            dto.setChannelName(wmChannel.getName());
        }
        //作者
        dto.setAuthorId(wmNews.getUserId().longValue());
        WmUser wmUser = wmUserMapper.selectById(wmNews.getUserId());
        if(wmUser != null){
            dto.setAuthorName(wmUser.getName());
        }
        //设置文章id
        if(wmNews.getArticleId() != null){
            dto.setId(wmNews.getArticleId());
        }
        dto.setCreatedTime(new Date());
        ResponseResult responseResult = articleClient.saveArticle(dto);
        return responseResult;
    }

    @Autowired
    private FileStorageService fileStorageService;
    /**
     * 审核图片
     * @param images
     * @param wmNews
     * @return
     */
    private boolean handleImageScan(List<String> images, WmNews wmNews) {
        boolean flag = true;
        if(images == null || images.size() == 0){
            return flag;
        }
        //下载图片 minIO
        //图片去重
        images = images.stream().distinct().collect(Collectors.toList());
        List<byte[]> imageList = new ArrayList<>();
        try {
            for (String image : images) {
                byte[] bytes = fileStorageService.downLoadFile(image);
                //byte[] 转换为bufferedImage
                ByteArrayInputStream in = new ByteArrayInputStream(bytes);
                BufferedImage bufferedImage = ImageIO.read(in);
                imageList.add(bytes);
            }
        }catch (Exception e){
            e.printStackTrace();
        }

        //审核图片
//        try {
//            Map map = greenImageScan.imageScan(imageList); /***greenImageScan.imageScan阿里云审核图片接口***/
//            if(map != null){
//                //审核失败
//                if(map.get("suggestion").equals("block")){
//                    flag = false;
//                    updateWmNews(wmNews, (short) 2, "当前文章中存在违规内容");
//                }
//
//                //不确定信息  需要人工审核
//                if(map.get("suggestion").equals("review")){
//                    flag = false;
//                    updateWmNews(wmNews, (short) 3, "当前文章中存在不确定内容");
//                }
//            }
//
//        } catch (Exception e) {
//            flag = false;
//            e.printStackTrace();
//        }
        return flag;

    }


    /**
     * 审核纯文本内容
     * @param content
     * @param wmNews
     * @return
     */
    private boolean handleTextScan(Object content, WmNews wmNews) {
        // 定义敏感词列表
        Set<String> SENSITIVE_WORDS = new HashSet<>(Arrays.asList(
                "暴力", "冰毒", "鸦片","海洛因"  // 敏感词
        ));

        boolean flag = true;
        String Text = wmNews.getTitle()+"-"+content;
        if (Text.length() == 0){
            return flag;
        }
        Map<String,Integer> map  = new HashMap<>();
        try {
                for (String word : SENSITIVE_WORDS){
                    if (Text.contains(word)){
                        if (!map.containsKey(word)) {
                            map.put(word,1);
                        } else{
                            map.put(word,map.get(word)+1);
                        }

                    }
                }
                //审核失败
                if (map.size()>2){
                    flag = false;
                    UpdateWmNews(wmNews, (short) 2, "当前文章中存在违规内容:"+map);

                }
                //不确定信息  需要人工审核
                else if(map.size()>=1 && map.size()<=2){
                    flag = false;
                    UpdateWmNews(wmNews, (short) 3, "当前文章中存不确定内容"+map);
                }

        }catch (Exception e){
            flag = false;
            e.printStackTrace();
        }
        return flag;
    }

    /**
     * 修改文章内容
     * @param wmNews
     * @param state
     * @param reason
     */
    private void UpdateWmNews(WmNews wmNews, short state, String reason) {
        wmNews.setStatus(state);
        wmNews.setReason(reason);
        wmNewsMapper.updateById(wmNews);
    }

    /**
     * 1.从自媒体文章的内容中提取文本和图片
     * 2.提取文章的封面图片
     * @param wmNews
     * @return
     */
    private Map<String, Object> handleTextAndImages(WmNews wmNews) {
        //存储纯文本内容
        StringBuilder stringBuilder = new StringBuilder();
        List<String> images = new ArrayList<>();

        //1.从自媒体文章的内容中提取文本和图片
        if (StringUtils.isNotBlank(wmNews.getContent())){
            List<Map> maps = JSONArray.parseArray(wmNews.getContent(),Map.class);
            for (Map map:maps){
                if (map.get("type").equals("text")){
                    stringBuilder.append(map.get("value"));
                }
                if (map.get("type").equals("image")){
                    images.add((String) map.get("value"));
                }
            }
        }
        //2.提取文章的封面图片
        if(StringUtils.isNotBlank(wmNews.getImages())){
            String[] split = wmNews.getImages().split(",");
            images.addAll(Arrays.asList(split));
        }
        Map<String, Object> resultMap = new HashMap<>();
        resultMap.put("content",stringBuilder.toString());
        resultMap.put("images",images);
        return resultMap;
    }
}
